Pennisetum advena

Wipff & Veldkamp
Common names: Purple fountaingrass
Treatment appears in FNA Volume 25.

Plants perennial, or annual in temperate climates; cespitose. Culms 1-1.5 m, erect, sometimes branching above, pubescent beneath the panicle; nodes glabrous. Leaves burgundy (rarely green); sheaths glabrous, margins ciliate; ligules 0.5-0.8 mm; blades 33-52 cm long, 6-11 mm wide, flat, antrorsely scabridulous, margins ciliate basally, midvein not noticeably thickened. Panicles 23-32 cm long, 30-58 mm wide, fully exerted from the sheaths, flexible, drooping, burgundy (rarely pale or whitish-green); rachises terete, pubescent. Fascicles 10-17 per cm, disarticulating at maturity; fascicle axes 1-2 mm, with 1-3 spikelets; outer bristles 43-68, 1.2-18.5 mm, terete, scabrous; inner bristles 4-10, 11.7-25 mm, long-ciliate; primary bristles 21.3-33.6 mm, ciliate, noticeably longer than the other bristles. Spikelets 5.3-6.5 mm; pedicels 0.1-0.3 mm; lower glumes 0.5-1 mm, veinless; upper glumes 1.9-3.6 mm, 0-1-veined; lower florets staminate; lower lemmas 4.7-6.1 mm, 5 (6) -veined; lower paleas 4.5-5 mm; anthers 2-2.5 mm; upper flo¬rets not disarticulating at maturity; upper lemmas 5.2-6.1 mm, 5-veined; anthers 2.5-2.7 mm. Caryopses concealed by the lemma and palea at maturity. 2n = 54.

Distribution

Calif., Fla., Pacific Islands (Hawaii), Tex.

Discussion

The origin of Pennisetum advena is uncertain. It is frequently cultivated as an ornamental, usually being sold as P. setaceum 'Rubrum'.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Pennisetum advena"
not disarticulating +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.27 cm2.7 mm <br />0.0027 m <br />) +
anatomy +  and kranz +
J.K. Wipff +
Wipff & Veldkamp +
1 (?) +  and 3 (?) +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
pseudopetiolate +
non-radiate +  and radiate +
33 cm330 mm <br />0.33 m <br /> (52 cm520 mm <br />0.52 m <br />) +
scabridulous +
usually linear +  and lanceolate occasionally ovate +
0.6 cm6 mm <br />0.006 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
spikelike +
reduced +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
disarticulating +
fused +  and free +
not developed +
terete +  and compressed +
sometimes longer +
Purple fountaingrass +
100 cm1,000 mm <br />1 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
not woody +
Calif. +, Fla. +, Pacific Islands (Hawaii) +  and Tex. +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
capillary +
germination +
pistillate +  and staminate +
sometimes longer +
compressed +  and terete +
shorter or longer +
subtending +
unequal +
membranous +
uncinate +
bracteate +  and ebracteate +
1.17 cm11.7 mm <br />0.0117 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
usually flatter and wider +
hollow +  and solid +
cauline +  and basal +
coriaceous +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
membranous +
inconspicuous +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
0.47 cm4.7 mm <br />0.0047 m <br /> (0.61 cm6.1 mm <br />0.0061 m <br />) +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
complex +  and simple +
concealed +  and prominent +
0.12 cm1.2 mm <br />0.0012 m <br /> (1.85 cm18.5 mm <br />0.0185 m <br />) +
23cm +  and 32cm +
subterranean +
1 +  and many +
3 cm30 mm <br />0.03 m <br /> (5.8 cm58 mm <br />0.058 m <br />) +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
dry +  and fleshy +
long-ciliate +  and scabrous +
2.13 cm21.3 mm <br />0.0213 m <br /> (3.36 cm33.6 mm <br />0.0336 m <br />) +
disarticulating +
in triplets +  and paired +
unisexual +  and bisexual +
compressed +  and terete +
0.53 cm5.3 mm <br />0.0053 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
1 +  and 3 +
fused +  and free +
2 +  and 3 +
dome--shaped +  and triangular +
Gramineae +
Pennisetum advena +
Pennisetum +
species +
membranous +
0.19 cm1.9 mm <br />0.0019 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
0.52 cm5.2 mm <br />0.0052 m <br /> (0.61 cm6.1 mm <br />0.0061 m <br />) +
membranous +  and coriaceous +
annual +  and perennial +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +
9 +, 8 +, 7 +  and 5 +